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Interface UserTransaction

public interfaceUserTransaction

The UserTransaction interface defines the methods that allow an application to explicitly manage transaction boundaries.

begin

public voidbegin()           throwsNotSupportedException,SystemException

Create a new transaction and associate it with the current thread.

Throws:

NotSupportedException - Thrown if the thread is already associated with a transaction and the Transaction Manager implementation does not support nested transactions.

SystemException - Thrown if the transaction manager encounters an unexpected error condition

commit

public voidcommit()            throwsRollbackException,HeuristicMixedException,HeuristicRollbackException,                   java.lang.SecurityException,                   java.lang.IllegalStateException,SystemException

Complete the transaction associated with the current thread. When this method completes, the thread becomes associated with no transaction.

Throws:

RollbackException - Thrown to indicate that the transaction has been rolled back rather than committed.

HeuristicMixedException - Thrown to indicate that a heuristic decision was made and that some relevant updates have been committed while others have been rolled back.

HeuristicRollbackException - Thrown to indicate that a heuristic decision was made and that some relevant updates have been rolled back.

java.lang.SecurityException - Thrown to indicate that the thread is not allowed to commit the transaction.

java.lang.IllegalStateException - Thrown if the current thread is not associated with a transaction.

SystemException - Thrown if the transaction manager encounters an unexpected error condition

rollback

public voidrollback()              throws java.lang.IllegalStateException,                     java.lang.SecurityException,SystemException

Roll back the transaction associated with the current thread. When this method completes, the thread becomes associated with no transaction.

Throws:

java.lang.SecurityException - Thrown to indicate that the thread is not allowed to roll back the transaction.

java.lang.IllegalStateException - Thrown if the current thread is not associated with a transaction.

SystemException - Thrown if the transaction manager encounters an unexpected error condition

setRollbackOnly

public voidsetRollbackOnly()                     throws java.lang.IllegalStateException,SystemException

Modify the transaction associated with the current thread such that the only possible outcome of the transaction is to roll back the transaction.

Throws:

java.lang.IllegalStateException - Thrown if the current thread is not associated with a transaction.

SystemException - Thrown if the transaction manager encounters an unexpected error condition

getStatus

public intgetStatus()              throwsSystemException

Obtain the status of the transaction associated with the current thread.

Returns:

The transaction status. If no transaction is associated with the current thread, this method returns the Status.NoTransaction value.

Throws:

SystemException - Thrown if the transaction manager encounters an unexpected error condition

setTransactionTimeout

public voidsetTransactionTimeout(int seconds)                           throwsSystemException

Modify the value of the timeout value that is associated with the transactions started by the current thread with the begin method.

If an application has not called this method, the transaction service uses some default value for the transaction timeout.

Parameters:

seconds - The value of the timeout in seconds. If the value is zero, the transaction service restores the default value.

Throws:

SystemException - Thrown if the transaction manager encounters an unexpected error condition